1
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Liu J, Yao J, Du J, Yu L, Duan W, Xiao Y, Lei Z. Direct Synthesis of α-Ketoamides via Copper-Catalyzed Reductive Amidation of Nitroarenes with α-Oxocarboxylic Acids. J Org Chem 2024; 89:6575-6583. [PMID: 38656973 DOI: 10.1021/acs.joc.4c00237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Nitroarenes are known for their stability, low toxicity, easy availability, and cost-effectiveness, making them one of the most fundamental chemical feedstocks. The direct utilization of nitroarenes as nitrogen sources in amidation reactions offers significant advantages over using arylamines. Herein, we disclose a streamlined method for constructing α-ketoamides through the direct coupling of nitroarenes with α-oxocarboxylic acids. This transformation obviates the need for preparing, isolating, and purifying arylamines, leading to improved efficiency, cost-effectiveness, and time savings.
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Affiliation(s)
- Jialing Liu
- School of Chemistry and Chemical Engineering, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, Guangxi University, Nanning, Guangxi 530004, P. R. China
| | - Jiaxin Yao
- School of Chemistry and Chemical Engineering, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, Guangxi University, Nanning, Guangxi 530004, P. R. China
| | - Jiahui Du
- School of Chemistry and Chemical Engineering, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, Guangxi University, Nanning, Guangxi 530004, P. R. China
| | - Lin Yu
- School of Chemistry and Chemical Engineering, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, Guangxi University, Nanning, Guangxi 530004, P. R. China
| | - Wengui Duan
- School of Chemistry and Chemical Engineering, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, Guangxi University, Nanning, Guangxi 530004, P. R. China
| | - Yuxuan Xiao
- School of Chemistry and Chemical Engineering, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, Guangxi University, Nanning, Guangxi 530004, P. R. China
| | - Zhiguo Lei
- School of Chemistry and Chemical Engineering, Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, Guangxi University, Nanning, Guangxi 530004, P. R. China
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2
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Das S, Mondal S, Midya SP, Mondal S, Ghosh E, Ghosh P. Base-Promoted Tandem Pathway for Keto-Amides: Visible Light-Mediated Room-Temperature Amidation Using Molecular Oxygen as an Oxidant. J Org Chem 2023; 88:14847-14859. [PMID: 37867455 DOI: 10.1021/acs.joc.3c00686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
Herein, we report metal- and photocatalyst-free room-temperature amidation for α-ketoamide synthesis from feedstock phenacyl bromides and amines using molecular oxygen as an oxidant as well as a source of oxygen in the amide segment. Visible light-mediated base-promoted one-pot sequential C-N/C═N/C═O bond formation takes place in a tandem manner to afford the desired product. Functional group tolerance (benzylic alcohol, keto, cyano, nitro, halo, etc.), a broad substrate scope, and gram-scale synthesis make this synthetic methodology more attractive. We have observed that electron-rich aromatic amines, aliphatic amines, and phenacyl bromide derivatives proceeded the present transformation with marginally superior reactivity in comparison to electron-deficient aromatic amines and phenacyl bromide derivatives. Moreover, several control experiments, in situ isolation of secondary amine and imine as key intermediates, and 18O-labeling experiments provide complete insight into the mechanism of the tandem pathway.
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Affiliation(s)
- Suman Das
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, West Bengal 700032, India
| | - Soumya Mondal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, West Bengal 700032, India
| | - Siba P Midya
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, West Bengal 700032, India
| | - Subal Mondal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, West Bengal 700032, India
| | - Eliza Ghosh
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, West Bengal 700032, India
| | - Pradyut Ghosh
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, West Bengal 700032, India
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3
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Goettig P, Koch NG, Budisa N. Non-Canonical Amino Acids in Analyses of Protease Structure and Function. Int J Mol Sci 2023; 24:14035. [PMID: 37762340 PMCID: PMC10531186 DOI: 10.3390/ijms241814035] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/18/2023] [Accepted: 08/20/2023] [Indexed: 09/29/2023] Open
Abstract
All known organisms encode 20 canonical amino acids by base triplets in the genetic code. The cellular translational machinery produces proteins consisting mainly of these amino acids. Several hundred natural amino acids serve important functions in metabolism, as scaffold molecules, and in signal transduction. New side chains are generated mainly by post-translational modifications, while others have altered backbones, such as the β- or γ-amino acids, or they undergo stereochemical inversion, e.g., in the case of D-amino acids. In addition, the number of non-canonical amino acids has further increased by chemical syntheses. Since many of these non-canonical amino acids confer resistance to proteolytic degradation, they are potential protease inhibitors and tools for specificity profiling studies in substrate optimization and enzyme inhibition. Other applications include in vitro and in vivo studies of enzyme kinetics, molecular interactions and bioimaging, to name a few. Amino acids with bio-orthogonal labels are particularly attractive, enabling various cross-link and click reactions for structure-functional studies. Here, we cover the latest developments in protease research with non-canonical amino acids, which opens up a great potential, e.g., for novel prodrugs activated by proteases or for other pharmaceutical compounds, some of which have already reached the clinical trial stage.
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Affiliation(s)
- Peter Goettig
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy, Paracelsus Medical University, Strubergasse 21, 5020 Salzburg, Austria
| | - Nikolaj G. Koch
- Biocatalysis Group, Technische Universität Berlin, 10623 Berlin, Germany;
- Bioanalytics Group, Institute of Biotechnology, Technische Universität Berlin, 10623 Berlin, Germany;
| | - Nediljko Budisa
- Bioanalytics Group, Institute of Biotechnology, Technische Universität Berlin, 10623 Berlin, Germany;
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
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4
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Changmai S, Gogoi T, Phukon J, Das B, Gogoi S. Ru(II)-catalyzed oxidative coupling of sulfoxonium ylides with amines: efficient synthesis of α-ketoamides and indolo[2,1- a]isoquinolines. Org Biomol Chem 2023; 21:3235-3244. [PMID: 36994697 DOI: 10.1039/d3ob00187c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
The first use of sulfoxonium ylides for the synthesis of α-ketoamides is described via a Ru(II)-catalyzed amidation reaction with amines. The same Ru(II)-catalyzed reaction of sulfoxonium ylides with 2-phenylindoles provided indolo[2,1-a]isoquinolines instead of α-ketoamides.
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Affiliation(s)
- Sumi Changmai
- Applied Organic Chemistry, Chemical Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India.
| | - Tribeni Gogoi
- Applied Organic Chemistry, Chemical Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India.
| | - Jyotshna Phukon
- Applied Organic Chemistry, Chemical Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India.
| | - Bipul Das
- Applied Organic Chemistry, Chemical Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India.
| | - Sanjib Gogoi
- Applied Organic Chemistry, Chemical Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India.
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5
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Bhukta S, Chatterjee R, Dandela R. Iodine-TBHP mediated efficient synthesis of α-ketoamides from vinyl azides and amines under mild conditions. Org Biomol Chem 2022; 20:3907-3912. [PMID: 35502880 DOI: 10.1039/d2ob00458e] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A convenient and practical synthetic approach for α-ketoamides has been developed under mild conditions. The facile synthesis of α-ketoamides has been accomplished using aryl vinyl azides and secondary amines at room temperature. The inexpensive and readily available iodine and TBHP easily promoted the oxidative amidation process to afford diketoamide derivatives in high yields. This method involves the synthesis of ketoamide compounds via sequential C-O and C-N bond formation. Moreover, metal-free and aerobic conditions and wide substrate scope are the notable advantages of this protocol.
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Affiliation(s)
- Swadhapriya Bhukta
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian Oil Odisha Campus, Samantpuri, Bhubaneswar 751013, India.
| | - Rana Chatterjee
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian Oil Odisha Campus, Samantpuri, Bhubaneswar 751013, India.
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Indian Oil Odisha Campus, Samantpuri, Bhubaneswar 751013, India.
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6
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Zhao Y, Meng X, Cai C, Wang L, Gong H. Synthesis of α‐Ketoamides via Electrochemical Decarboxylative Acylation of Isocyanides Using α‐Ketoacids as an Acyl Source. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yuhan Zhao
- Xiangtan University Chemistry 411105 Xiangtan CHINA
| | - Xia Meng
- Xiangtan University Chemtistry 411105 Xiangtan CHINA
| | - Changqun Cai
- Xiangtan University Chemistry 411105 Xiangtan CHINA
| | - Lingyun Wang
- Xiangtan University Chemistry 411105 Xiangtan CHINA
| | - Hang Gong
- College of Chemistry, Xiangtan University Chemistry College of Chemistry 411105 Xiangtan CHINA
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7
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Chen R, Jia RL, Li W, Zhao W, Wang KK, Wang ZY, Ma X, Dai W, Sun A. A copper iodide-catalyzed coupling reaction of benzofuran-3(2H)-ones with amines: an approach to α-ketoamides. Org Biomol Chem 2021; 19:5294-5297. [PMID: 34085691 DOI: 10.1039/d1ob00715g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A CuI-catalyzed coupling reaction of benzofuran-3(2H)-ones with amines has been well established for the direct synthesis of α-ketoamides. This process involves C-O bond cleavage and C[double bond, length as m-dash]O/C-N bond formation. Mechanism studies indicated that this α-ketoamide formation reaction may involve a free radical process.
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Affiliation(s)
- Rongxiang Chen
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Ruo-Ling Jia
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Wenbo Li
- School of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453000, P.R. of China
| | - Wei Zhao
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Kai-Kai Wang
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Zhan-Yong Wang
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Xueji Ma
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Wei Dai
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
| | - Aili Sun
- School of Pharmacy, Xinxiang University, Xinxiang 453000, P.R. of China.
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8
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Huang J, Liang B, Chen X, Liu Y, Li Y, Liang J, Zhu W, Tang X, Li Y, Zhu Z. Rapid assembly of α-ketoamides through a decarboxylative strategy of isocyanates with α-oxocarboxylic acids under mild conditions. Org Biomol Chem 2021; 19:4783-4787. [PMID: 33982036 DOI: 10.1039/d1ob00562f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and practical method for α-ketoamide synthesis via a decarboxylative strategy of isocyanates with α-oxocarboxylic acids is described. The reaction proceeds at room temperature under mild conditions without an oxidant or an additive, showing good substrate scope and functional compatibility. Moreover, the applicability of this method was further demonstrated by the synthesis of various bioactive molecules and different application examples through a two-step one-pot operation.
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Affiliation(s)
- Junjie Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Baihui Liang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Xiuwen Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Yifu Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Yawen Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Jingwen Liang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Weidong Zhu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Xiaodong Tang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China.
| | - Yibiao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
| | - Zhongzhi Zhu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, 529020, China.
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9
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Barzkar N, Khan Z, Tamadoni Jahromi S, Pourmozaffar S, Gozari M, Nahavandi R. A critical review on marine serine protease and its inhibitors: A new wave of drugs? Int J Biol Macromol 2020; 170:674-687. [PMID: 33387547 DOI: 10.1016/j.ijbiomac.2020.12.134] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 12/10/2020] [Accepted: 12/17/2020] [Indexed: 01/04/2023]
Abstract
Marine organisms are rich sources of enzymes and their inhibitors having enormous therapeutic potential. Among different proteolytic enzymes, serine proteases, which can be obtained from various marine organisms show a potential to biomedical application as thrombolytic agents. Although this type of proteases plays a crucial role in almost all biological processes, their uncontrolled activity often leads to several diseases. Accordingly, the actions of these types of proteases are regulated by serine protease inhibitors (SPIs). Marine SPIs control complement activation and various other physiological functions, such as inflammation, immune function, fibrinolysis, blood clotting, and cancer metastasis. This review highlights the potential use of serine proteases and their inhibitors as the new wave of promising drugs.
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Affiliation(s)
- Noora Barzkar
- Department of Marine Biology, Faculty of Marine Science and Technology, University of Hormozgan, Bandar Abbas, Iran.
| | - Zahoor Khan
- Department of Microbiology, University of Karachi, Karachi 75270, Pakistan
| | - Saeid Tamadoni Jahromi
- Persian Gulf and Oman Sea Ecological Research Center, Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research, Education and Extension Organization (AREEO), Bandar 'Abbas, Iran
| | - Sajjad Pourmozaffar
- Persian Gulf Mollusks Research Station, Persian Gulf and Oman Sea Ecological Research Center, Agricultural Research Education and Extension Organization (AREEO), Iranian Fisheries Sciences Research Institute, Bandar-e-Lengeh, Iran
| | - Mohsen Gozari
- Persian Gulf and Oman Sea Ecological Research Center, Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research, Education and Extension Organization (AREEO), Bandar 'Abbas, Iran
| | - Reza Nahavandi
- Animal Science Research Institute of Iran (ASRI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
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10
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Unique Polyhalogenated Peptides from the Marine Sponge Ircinia sp. Mar Drugs 2020; 18:md18080396. [PMID: 32731567 PMCID: PMC7460063 DOI: 10.3390/md18080396] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/21/2020] [Accepted: 07/27/2020] [Indexed: 11/24/2022] Open
Abstract
Two new bromopyrrole peptides, haloirciniamide A (1) and seribunamide A (2), have been isolated from an Indonesian marine sponge of the genus Ircinia collected in the Thousand Islands (Indonesia). The planar structure of both compounds was assigned on the basis of extensive 1D and 2D NMR spectroscopy and mass spectrometry. The absolute configuration of the amino acid residues in 1 and 2 was determined by the application of Marfey’s method. Compound 1 is the first dibromopyrrole cyclopeptide having a chlorohistidine ring, while compound 2 is a rare peptide possessing a tribromopyrrole ring. Both compounds failed to show significant cytotoxicity against four human tumor cell lines, and neither compound was able to inhibit the enzyme topoisomerase I or impair the interaction between programmed cell death protein PD1 and its ligand, PDL1.
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11
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Affiliation(s)
- Debarati Das
- Department of ChemistryInstitute of Chemical Technology, Matunga Mumbai 400019 India
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12
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Islam SS, Riyajuddin S, Molla RA, Yasmin N, Ghosh K, Islam SM. POP-Pd(ii) catalyzed easy and safe in situ carbonylation towards the synthesis of α-ketoamides from secondary cyclic amines utilizing CHCl3 as a carbon monoxide surrogate. NEW J CHEM 2020. [DOI: 10.1039/c9nj05089b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
POP-palladium(ii) was synthesized for the in situ carbonylation of aryl iodides and secondary cyclic amine to the respective α-ketoamides.
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Affiliation(s)
- Sk Safikul Islam
- Department of Chemistry
- University of Kalyani
- Nadia
- India
- Department of Chemistry
| | | | - Rostam Ali Molla
- Department of Chemistry
- S. N. Bose Govt. Polytechnic College
- Malda
- India
| | - Nasima Yasmin
- Department of Chemistry
- Aliah University
- Kolkata-700160
- India
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13
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Water dispersed gold nanoparticles catalyzed aerobic oxidative cross-dehydrogenative coupling: An efficient synthesis of α-ketoamides in water. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.08.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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14
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Rodríguez-Fernández M, Yan X, Collados JF, White PB, Harutyunyan SR. Lewis Acid Enabled Copper-Catalyzed Asymmetric Synthesis of Chiral β-Substituted Amides. J Am Chem Soc 2017; 139:14224-14231. [PMID: 28960071 PMCID: PMC5639465 DOI: 10.1021/jacs.7b07344] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
![]()
Here we report that readily available
silyl- and boron-based Lewis
acids in combination with chiral copper catalysts are able to overcome
the reactivity issues of unactivated enamides, known as the least
reactive carboxylic acid derivatives, toward alkylation with organomagnesium
reagents. Allowing unequaled chemo-reactivity and stereocontrol in
catalytic asymmetric conjugate addition to enamides, the method is
distinguished by its unprecedented reaction scope, allowing even the
most challenging and synthetically important methylations to be accomplished
with good yields and excellent enantioselectivities. This catalytic
protocol tolerates a broad temperature range (−78 °C to
ambient) and scale up (10 g), while the chiral catalyst can be reused
without affecting overall efficiency. Mechanistic studies revealed
the fate of the Lewis acid in each elementary step of the copper-catalyzed
conjugate addition of Grignard reagents to enamides, allowing us to
identify the most likely catalytic cycle of the reaction.
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Affiliation(s)
- Mamen Rodríguez-Fernández
- Stratingh Institute for Chemistry, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Xingchen Yan
- Stratingh Institute for Chemistry, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Juan F Collados
- Stratingh Institute for Chemistry, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Paul B White
- Institute for Molecules and Materials, Radboud University , Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Syuzanna R Harutyunyan
- Stratingh Institute for Chemistry, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
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15
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Affiliation(s)
- Dinesh Kumar
- Department
of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Sandeep R. Vemula
- Department
of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
| | - Gregory R. Cook
- Department
of Chemistry and
Biochemistry, North Dakota State University, Fargo, North Dakota 58108-6050, United States
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16
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De Risi C, Pollini GP, Zanirato V. Recent Developments in General Methodologies for the Synthesis of α-Ketoamides. Chem Rev 2016; 116:3241-305. [DOI: 10.1021/acs.chemrev.5b00443] [Citation(s) in RCA: 130] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Carmela De Risi
- Dipartimento
di Scienze Chimiche e Farmaceutiche, Università degli Studi di Ferrara, Via Fossato di Mortara 17, 44121 Ferrara, Italy
| | - Gian Piero Pollini
- Istituto Universitario
di Studi Superiori “IUSS−Ferrara 1391”, Via delle Scienze 41/b, 44121 Ferrara, Italy
| | - Vinicio Zanirato
- Dipartimento
di Scienze Chimiche e Farmaceutiche, Università degli Studi di Ferrara, Via Fossato di Mortara 17, 44121 Ferrara, Italy
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17
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New marine natural products from sponges (Porifera) of the order Dictyoceratida (2001 to 2012); a promising source for drug discovery, exploration and future prospects. Biotechnol Adv 2016; 34:473-491. [PMID: 26802363 DOI: 10.1016/j.biotechadv.2015.12.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Revised: 12/15/2015] [Accepted: 12/17/2015] [Indexed: 10/22/2022]
Abstract
The discovery of new drugs can no longer rely primarily on terrestrial resources, as they have been heavily exploited for over a century. During the last few decades marine sources, particularly sponges, have proven to be a most promising source of new natural products for drug discovery. This review considers the order Dictyoceratida in the Phylum Porifera from which the largest number of new marine natural products have been reported over the period 2001-2012. This paper examines all the sponges from the order Dictyoceratida that were reported as new compounds during the time period in a comprehensive manner. The distinctive physical characteristics and the geographical distribution of the different families are presented. The wide structural diversity of the compounds produced and the variety of biological activities they exhibited is highlighted. As a representative of sponges, insights into this order and avenues for future effective natural product discovery are presented. The research institutions associated with the various studies are also highlighted with the aim of facilitating collaborative relationships, as well as to acknowledge the major international contributors to the discovery of novel sponge metabolites. The order Dictyoceratida is a valuable source of novel chemical structures which will continue to contribute to a new era of drug discovery.
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18
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Hahn D, Chin J, Kim H, Yang I, Won DH, Ekins M, Choi H, Nam SJ, Kang H. Sesquiterpenoids with PPARδ agonistic effect from a Korean marine sponge Ircinia sp. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.07.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Schoonen AK, Fernández-Ibáñez MÁ, Fañanás-Mastral M, Teichert JF, Feringa BL. Chiral amides via copper-catalysed enantioselective conjugate addition. Org Biomol Chem 2014; 12:36-41. [PMID: 24196172 DOI: 10.1039/c3ob41923a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Anne K Schoonen
- Department of Organic Chemistry and Molecular Inorganic Chemistry, Stratingh Institute, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands.
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20
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Plaza A, Viehrig K, Garcia R, Müller R. Jahnellamides, α-keto-β-methionine-containing peptides from the terrestrial myxobacterium Jahnella sp.: structure and biosynthesis. Org Lett 2013; 15:5882-5. [PMID: 24199909 DOI: 10.1021/ol402967y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two new cyclic peptides, termed jahnellamides A and B, were isolated from the myxobacterium Jahnella sp. Their structures were solved by NMR, ESIMS, and chemical derivatizations. Jahnellamides are a new class of α-ketoamide-containing peptides comprised of nonproteinogenic amino acids, including α-keto-β-methionine and 4-hydroxyglutamic acid. Moreover, in silico analysis of the genome sequence along with feeding experiments allowed us to identify and annotate a candidate nonribosomal peptide synthetase biosynthetic gene cluster containing a polyketide synthase module involved in the formation of the α-ketoamide moiety.
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Affiliation(s)
- Alberto Plaza
- Department of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI) and Pharmaceutical Biotechnology, Saarland University , Campus C2 3, 66123 Saarbrücken, Germany
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Abstract
Marine sponges continue to attract wide attention from marine natural product chemists and pharmacologists alike due to their remarkable diversity of bioactive compounds. Since the early days of marine natural products research in the 1960s, sponges have notoriously yielded the largest number of new metabolites reported per year compared to any other plant or animal phylum known from the marine environment. This not only reflects the remarkable productivity of sponges with regard to biosynthesis and accumulation of structurally diverse compounds but also highlights the continued interest of marine natural product researchers in this fascinating group of marine invertebrates. Among the numerous classes of natural products reported from marine sponges over the years, alkaloids, peptides, and terpenoids have attracted particularly wide attention due to their unprecedented structural features as well as their pronounced pharmacological activities which make several of these metabolites interesting candidates for drug discovery. This chapter consequently highlights several important groups of sponge-derived alkaloids, peptides, and terpenoids and describes their biological and/or pharmacological properties.
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Faure S, Hjelmgaard T, Roche SP, Aitken DJ. Passerini reaction-amine deprotection-acyl migration peptide assembly: efficient formal synthesis of cyclotheonamide C. Org Lett 2010; 11:1167-70. [PMID: 19203293 DOI: 10.1021/ol900048r] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A short, convergent, formal total synthesis of cyclotheonamide C is described. The key linear pentapeptide intermediate is assembled at the same time as the elaboration of the alpha-hydroxyhomoarginine (H-hArg) residue via a three-component Passerini reaction-amine deprotection-O,N-acyl migration strategy.
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Affiliation(s)
- Sophie Faure
- Laboratoire de Synthèse et Etude de Systèmes d'Intérêt Biologique, SEESIB (UMR 6504-CNRS), Université Blaise Pascal-Clermont-Ferrand 2, 24 avenue des Landais, 63177 Aubière Cedex, France.
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Schaschke N, Sommerhoff CP. Upgrading a natural product: inhibition of human beta-tryptase by cyclotheonamide analogues. ChemMedChem 2010; 5:367-70. [PMID: 20077463 DOI: 10.1002/cmdc.200900484] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Norbert Schaschke
- Fakultät für Chemie, Universität Bielefeld, Universitätsstr. 25, 33615 Bielefeld, Germany.
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24
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Pandey PK. Endangered medicinal species of the Indian Ocean: radical need for conservation. Chem Biodivers 2009; 6:990-1001. [PMID: 19623561 DOI: 10.1002/cbdv.200800183] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Life originated in the Oceans, which are also the most fertile source of chemically distinctive natural products that are mainly accumulated in living organisms. Several of these compounds show pharmacological activities, and are helpful for the invention and discovery of bioactive compounds, primarily for several fatal diseases. The Indian Ocean is home to several exotic species of flora and fauna. Several environmental and man-made factors are responsible for deterioration of several precious biodiversity areas of the Ocean. The author, while highlighting the medicinal importance of these organisms, underlines the need for comprehensive conservatory measures on the part of the international community to be taken in order to maintain the rich Oceanic biodiversity.
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Affiliation(s)
- Pt Kartikay Pandey
- Dr. Pandey's Laboratories and Research Foundation, Behind Madiyaon Police Station, Lucknow, India.
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Dahiya R, Kumar A, Gupta R. Synthesis, Cytotoxic and Antimicrobial Screening of a Proline-Rich Cyclopolypeptide. Chem Pharm Bull (Tokyo) 2009; 57:214-7. [DOI: 10.1248/cpb.57.214] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Rajiv Dahiya
- Department of Pharmaceutical Chemistry, NRI Institute of Pharmacy
| | - Akhilesh Kumar
- Department of Pharmaceutical Chemistry, Rajiv Academy for Pharmacy
| | - Rajul Gupta
- Department of Pharmaceutical Chemistry, Rajiv Academy for Pharmacy
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Roche SP, Faure S, El Blidi L, Aitken DJ. Total Synthesis of Cyclotheonamide C by Use of an α-Keto Cyanophosphorane Methodology for Peptide Assembly. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800591] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Roche S, Faure S, Aitken D. Total Synthesis of Cyclotheonamide C using a Tandem Backbone-Extension-Coupling Methodology. Angew Chem Int Ed Engl 2008; 47:6840-2. [DOI: 10.1002/anie.200802005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Roche S, Faure S, Aitken D. Total Synthesis of Cyclotheonamide C using a Tandem Backbone-Extension-Coupling Methodology. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200802005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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29
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Hashizume H, Nishimura Y. Cyclic Lipopeptide Antibiotics. BIOACTIVE NATURAL PRODUCTS (PART O) 2008. [DOI: 10.1016/s1572-5995(08)80016-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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Nakao Y, Fusetani N. Enzyme inhibitors from marine invertebrates. JOURNAL OF NATURAL PRODUCTS 2007; 70:689-710. [PMID: 17362037 DOI: 10.1021/np060600x] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Marine invertebrates are rich sources of small molecules with unique chemical skeletons and potent bioactivities. Historically, such compounds were discovered mainly through the use of assays for phenotype-oriented activities, such as cytotoxicity or antimicrobial effects. More recently, target-oriented searches for bioactive substances, as exemplified by enzyme inhibitors, have become much more common, given a growing need for small-molecule inhibitors essential for studies of complex processes at the interface of chemistry and biology. In this review, selected enzyme inhibitors from marine invertebrates are presented.
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Affiliation(s)
- Yoichi Nakao
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.
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Screening of inhibitors of porcine dipeptidyl peptidase IV activity in aqueous extracts from marine organisms. Enzyme Microb Technol 2007. [DOI: 10.1016/j.enzmictec.2006.07.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
Mast cells (MCs) are traditionally thought of as a nuisance for its host, for example, by causing many of the symptoms associated with allergic reactions. In addition, recent research has put focus on MCs for displaying harmful effects during various autoimmune disorders. On the other hand, MCs can also be beneficial for its host, for example, by contributing to the defense against insults such as bacteria, parasites, and snake venom toxins. When the MC is challenged by an external stimulus, it may respond by degranulation. In this process, a number of powerful preformed inflammatory "mediators" are released, including cytokines, histamine, serglycin proteoglycans, and several MC-specific proteases: chymases, tryptases, and carboxypeptidase A. Although the exact effector mechanism(s) by which MCs carry out their either beneficial or harmful effects in vivo are in large parts unknown, it is reasonable to assume that these mediators may contribute in profound ways. Among the various MC mediators, the exact biological function of the MC proteases has for a long time been relatively obscure. However, recent progress involving successful genetic targeting of several MC protease genes has generated powerful tools, which will enable us to unravel the role of the MC proteases both in normal physiology as well as in pathological settings. This chapter summarizes the current knowledge of the biology of the MC proteases.
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Affiliation(s)
- Gunnar Pejler
- Department of Anatomy, Physiology and Biochemistry, The Biomedical Centre, Swedish University of Agricultural Sciences, Uppsala, Sweden
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McGrath ME, Sprengeler PA, Hirschbein B, Somoza JR, Lehoux I, Janc JW, Gjerstad E, Graupe M, Estiarte A, Venkataramani C, Liu Y, Yee R, Ho JD, Green MJ, Lee CS, Liu L, Tai V, Spencer J, Sperandio D, Katz BA. Structure-guided design of peptide-based tryptase inhibitors. Biochemistry 2006; 45:5964-73. [PMID: 16681368 DOI: 10.1021/bi060173m] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Improved peptide-based inhibitors of human beta tryptase were discovered using information gleaned from tripeptide library screening and structure-guided design methods, including fragment screening. Our efforts sought to improve this class of inhibitors by replacing the traditional Lys or Arg P1 element. The optimized compounds display low nanomolar potency against the mast cell target and several hundred-fold selectivity with respect to serine protease off targets. Thus, replacement of Lys/Arg at P1 in a peptide-like scaffold does not need to be accompanied by a loss in target affinity.
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Affiliation(s)
- Mary E McGrath
- Celera Genomics, Inc., 180 Kimball Way, South San Francisco, California 94080, USA.
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Abstract
In 1960, a trypsin-like activity was found in mast cells [Glenner GG & Cohen LA (1960) Nature 185, 846-847] and this activity is now commonly referred to as 'tryptase'. Over the years, much knowledge about mast cell tryptase has been gathered, and a recent (18 January 2006) PubMed search for the keywords 'tryptase + mast cell*' retrieved 1661 articles. However, still very little is known about its true biological function. For example, the true physiological substrate(s) for mast cell tryptase has not been identified, and the potential role of tryptase in mast cell-related disease is not understood. Mast cell tryptase has several unique features, with perhaps the most remarkable being its organization into a tetrameric state with all of the active sites oriented towards a narrow central pore and its consequent complete resistance towards endogenous macromolecular protease inhibitors. Much effort has been invested to elucidate these properties of tryptase. In this review we summarize the current knowledge of mast cell tryptase, including novel insights into its possible biological functions and mechanisms of regulation.
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Affiliation(s)
- Jenny Hallgren
- Department of Molecular Biosciences, The Biomedical Centre, Swedish University of Agricultural Sciences, Uppsala, Sweden.
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Choi HJ, Choi YH, Yee SB, Im E, Jung JH, Kim ND. Ircinin-1 induces cell cycle arrest and apoptosis in SK-MEL-2 human melanoma cells. Mol Carcinog 2005; 44:162-73. [PMID: 16163705 DOI: 10.1002/mc.20084] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We investigated the effects of ircinin-1, a lipid compound (a C25 sesterterpene tetronic acid) isolated from marine sponges (Sarcotragus sp.), on the modulation of cell cycle and induction of apoptosis in SK-MEL-2 human skin cancer cells (mutant p53). Ircinin-1 treatment on SK-MEL-2 cells resulted in a dose-dependent inhibition of cell growth and induced apoptotic cell death. Flow cytometric analysis revealed that ircinin-1 resulted in G1 arrest in cell cycle progression which was associated with a marked decrease in the protein expression of D-type cyclins and their activating partners Cdk 4 and 6 with concomitant inductions of p21WAF1/CIP1 and p27KIP1. The induction of p21WAF1/CIP1 appears to be transcriptionally upregulated and is p53-independent. In addition, ircinin-1 suppressed the phosphorylation of pRb protein and increased the co-association of pRb or proliferating cell nuclear antigen (PCNA) with p21WAF1/CIP1 in these cells. Ircinin-1 treatment also resulted in induction of apoptosis as determined by morphological changes, DNA fragmentation, alternated ratio of Bax/Bcl-2, cleavages of poly(ADP-ribose) polymerase and PLC-gamma1, and flow cytometric analysis. Ircinin-1 also induced cytochrome c release, cleavage activations of caspase-3 and -9, and upregulation of Fas and Fas-L. Even though the inhibitor of apoptosis protein (IAP) was expressed in ircinin-1-untreated or -treated SK-MEL-2 cells, only the level of cIAP-1, but not XIAP or cIAP-2, was decreased during ircinin-1-induced apoptosis at Western blot and RT-PCR studies. Taken together, these findings suggest that ircinin-1 has strong potential for development as an agent for prevention against skin cancer.
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Affiliation(s)
- Hye Joung Choi
- Department of Pharmacy and Pusan Cancer Research Center, Pusan National University, Busan, South Korea
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36
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Affiliation(s)
- Roberto G S Berlinck
- Instituto de Química de São Carlos, Universidade de São Paulo CP 780, CEP 13560-970, São Carlos, Brazil.
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Scarpi D, McBride JD, Leatherbarrow RJ. Inhibition of human β-tryptase by Bowman–Birk inhibitor derived peptides: creation of a new tri-functional inhibitor. Bioorg Med Chem 2004; 12:6045-52. [PMID: 15519150 DOI: 10.1016/j.bmc.2004.09.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2004] [Accepted: 09/10/2004] [Indexed: 10/26/2022]
Abstract
Bowman-Birk inhibitor proteins (BBIs), which are potent inhibitors of chymotrypsin-like proteases, do not inhibit human beta-tryptase despite this protein having a chymotrypsin-like fold. We have reported previously that, in contrast, BBI-derived peptides (whose sequences incorporate the solvent exposed reactive site loop motif) are able to inhibit human beta-tryptase. This is due to their small size, which allows them to access the restricted active site(s) of tryptase, which has an unusual tetrameric arrangement with four active sites flanking a central pore. In this paper, we have examined the possibility of creating additional interactions within this pore by adding extensions to the BBI-peptide motif. We have taken the core disulfide-bridged sequence SCTKSIPPQCY and examined a series of extensions, at both the C- and N-termini, that bear a second positively charged Lys residue at their end. The aim was to construct inhibitors that could make additional interactions in tryptase by spanning the gap between adjacent active sites in the enzyme, producing a double-headed inhibitor; a positively charged group was used as the dominant specificity of this enzyme is for a positively charged P1 residue. Both N- and C-terminal extensions are found to produce inhibitors of much increased potency, with a strong dependence of potency on chain length. Moreover, it was found that the C- and N-terminal extensions were able to synergise, with their combination on the same peptide producing an even better inhibitor with a potency 10(4)-fold greater than the original sequence. We suggest that the C- and N-terminal extensions are picking up interactions with separate additional sites on the tryptase, making the doubly extended BBI peptide a tri-functional tryptase inhibitor.
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Affiliation(s)
- Dina Scarpi
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
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Aitken DJ, Faure S, Roche S. Synthetic approaches to the southern part of cyclotheonamide C. Tetrahedron Lett 2003. [DOI: 10.1016/j.tetlet.2003.09.196] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Pettit GR, Tan R. Antineoplastic agents 390. Isolation and structure of phakellistatin 12 from a Chuuk archipelago marine sponge. Bioorg Med Chem Lett 2003; 13:685-8. [PMID: 12639558 DOI: 10.1016/s0960-894x(02)01054-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A new cancer cell growth inhibitory (P388 lymphocytic leukemia ED(50) 2.8 microg/mL) cyclodecapeptide designated phakellistatin 12 (2) has been isolated as a trace (1.7 x 10(-6)% yield) constituent of the Western Pacific Ocean (Federated States of Micronesia-Chuuk) sponge Phakellia sp. Employing principally a combination of high resolution FAB with high field (500 MHz) 1H, 13C and 2-D NMR and chiral GC analyses the structure (all S chirality) cyclo-Ile-Phe-Thr-Leu-Pro-Pro-Tyr-Ile-Pro-Pro was assigned.
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Affiliation(s)
- George R Pettit
- Cancer Research Institute, Arizona State University, PO Box 872404, Tempe, AZ 85287-2404, USA.
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